PDF malware analysis — malicious · 7afb71c6bfc2ca1b

MALICIOUS

PDF

34.8 KB Created: 2021-06-22 12:22:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: b717644d136400ee07d66fb6ca839d9a SHA-1: 654763f33c9178ace738adfc16b0e0ef59a0d1cb SHA-256: 7afb71c6bfc2ca1b2f352e879cb5655f5e3fdf2c88c12d6f4e0d989375a0446f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector at http://netcdn.co/app/406889139/coin-master-free-coins-and-spins-game-hack. The document body and embedded links suggest a lure for game-related cheats or currency, which is a common tactic for distributing malware. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://netcdn.co/app/406889139/coin-master-free-coins-and-spins-game-hack In PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/how-to-robux_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/free-roblox-thank-you-tags_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/free-dominus-roblox-to-wear_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://mtsn4blitar.online/__statics/gudangsoal/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off00003178.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3178	22964 bytes
SHA-256: `d3a34fcdde5f3551f2a34d6d0ac0e85cff121e174a1eddfdda4bdef006464f47`
`font_01_sfnt_off000064f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64F7	18348 bytes
SHA-256: `8f4e14d352258b2a04c4750a5c5e6ee18e44525ef82eed3820f54d352c64eef8`

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